Magnesium Containing Patents (Class 148/440)
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Publication number: 20030111139Abstract: Aluminum alloy die castings combine good as-cast strength with good as-cast ductility, without any heat treatment. The alloy comprises 2.75 5.25 wt. % magnesium, 1.85-3.15 wt. % zinc, 0.65-1.2 wt. % manganese, 0.10-0.18 wt. % iron, less than 0.10 wt. % copper, less than 0.10 wt. % silicon, less than 0.20 wt. % titanium and the balance aluminum ant-d Incidental impurities and furthermore the percent by weight magnesium is greater than or equal to the percent by weight zinc. A particularly high strength version of the alloy comprises 4.75%-5.25 wt. % magnesium and 2.85-3.15 wt. % zinc. A particularly high ductility version of the alloy comprises 2.75-3.25 wt. % magnesium, 1.85 2.5 wt. % zinc.Type: ApplicationFiled: December 10, 2002Publication date: June 19, 2003Inventors: J. Fred Major, Lawrence Purdon
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Publication number: 20030102060Abstract: An extrudable, drawable and brazeable aluminum alloy that has improved corrosion resistance and is suitable for use in thin-wall fluid-carrying tube lines. Preferred alloys consist essentially of, by weight, about 0.17 to about 0.22% iron, about 0.06 to about 0.10% silicon, about 0.30 to about 0.70% manganese, about 0.10 to about 0.30% magnesium, and about 0.19 to about 0.25% zinc, with the balance aluminum and incidental impurities.Type: ApplicationFiled: April 3, 2002Publication date: June 5, 2003Inventors: Ole Daaland, Lars Auran, Trond Furu
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Patent number: 6562154Abstract: Aluminum sheet products having highly anisotropic grain microstructures and highly textured crystallographic microstructures are disclosed. The products exhibit improved strength and improved resistance to fatigue crack growth, as well as other advantageous properties such as improved combinations of strength and fracture toughness. The sheet products are useful for aerospace and other applications, particularly aircraft fuselages.Type: GrantFiled: June 12, 2000Date of Patent: May 13, 2003Assignee: Aloca Inc.Inventors: Roberto J. Rioja, Robert W. Westerlund, Anne E. Roberts, Dhruba J. Chakrabarti, Diana K. Denzer, Anthony Morales, Paul E. Magnusen, Gregory B. Venema
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Patent number: 6555247Abstract: An aluminum alloy plate for a planographic printing plate capable of being provided with a satisfactory roughed surface by electrolytic etching. The aluminum alloy plate contains 0.1 to 0.6% of Fe, 0.01 to 0.2% of Si, 5 to 150 ppm of Cu, and balance of Al and unavoidable impurities and has a surface layer portion formed of a metastable phase dispersion layer in which metastable phase AlFe-based intermetallic compound particles are dispersed. The metastable intermetallic compound particles each act as a starting point for pits. The alloy plate is formed with a roughed surface which is reduced in unetching and uniformly formed with pits, by electrolytic etching.Type: GrantFiled: July 9, 2001Date of Patent: April 29, 2003Assignee: Mitsubishi Aluminum Kabushiki KaishaInventor: Keitarou Yamaguchi
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Patent number: 6544358Abstract: An aluminium alloy in the AA5XXX series has the composition: Si 0.10-0.25 %; Fe 0.18-0.30 %; Cu up to 0.5 %; Mn 0.4-0.7 %; Mg 3.0-3.5%; Cr up to 0.2%; and Ti up to 0.1%. Rolled and annealed sheet of the alloy is readily formed into shaped components for use in vehicles which components have good strength and resistance to stress corrosion cracking.Type: GrantFiled: July 8, 1999Date of Patent: April 8, 2003Assignee: Alcan International LimitedInventors: Alan Robert Carr, Kevin Michael Gatenby, Michael Bull
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Patent number: 6531004Abstract: Weldable, high-magnesium-content aluminum-magnesium alloy consisting of at least 5-6% w/w magnesium (Mg), 0.05-0.15% w/w zirconium (Zr), 0.05-0.12% w/w manganese (Mn), 0.01-0.2% w/w titanium (Ti), 0.05-0.5% w/w of one or more elements from the scandium group and/or terbium (Tb), wherein at least scandium (Sc) is included, 0.1-0.2% w/w copper (Cu) and/or 0.1-0.4% w/w zinc (Zn), along with aluminum (Al), and unavoidable contamination does not exceed 0.1% w/w silicon (Si).Type: GrantFiled: October 18, 2000Date of Patent: March 11, 2003Assignee: EADS Deutschland GmbHInventors: Blanka Lenczowski, Viktor Yelagin, Rainer Rauh, Valeri Zakharov, Yuri Filatov
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Publication number: 20030037848Abstract: The newly proposed cast aluminum alloy product has the composition consisting of 6.5-8.0% Si, 0.25-0.45% Mg, 0.08-0.40% Fe, 0.001-0.01% Ca, P less than 0.001%, 0.02-0.1% Ti, 0.001-0.01% B, optionally one or two of 0.05-0.3% Cr and 0.05-0.2% Mn, and the balance being Al except inevitable impurities. It has the metallurgical structure that an &agr;-Al phase in a surface layer is of average grain size different by 50 &mgr;m or less from an &agr;-Al phase in an inner part, and that a maximum size of eutectic Si particles is 400 &mgr;m or smaller. It is manufactured by injecting a molten aluminum alloy into metal dies at an injection speed of 0.05-0.25 m/second, and then cooling the injected alloy at a cooling speed of 20° C./or higher in a temperature range between liquidus and solidus curves in a state charged with a pressure of 30 MPa or higher. Since the cast product is good of ductility, it is used as a member for coupling another member therewith by calking or the like.Type: ApplicationFiled: May 13, 2002Publication date: February 27, 2003Applicant: Nippon Light Co., Ltd.Inventors: Akio Hashimoto, Takaaki Ikari, Hiromi Takagi, Sumi Yoshikawa
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Patent number: 6521061Abstract: A porous preform includes at least one kind of preform-forming materials of ceramic particles, ceramic fibers and ceramic whiskers, and a film of a binder formed on a surface of said at least one kind of the preform-forming materials and comprising magnesium or a magnesium alloy. The preform is used for producing a metal matrix composite material.Type: GrantFiled: October 31, 2000Date of Patent: February 18, 2003Assignee: Hiroshima UniversityInventors: Hideharu Fukunaga, Gen Sasaki, Makoto Yoshida, Jin Pan
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Publication number: 20030008165Abstract: A shock absorbing material comprising an Al—Mg—Si series aluminum alloy having high strength and showing excellent energy absorbing property when compressed in the axial direction of extrusion is obtained. The shock absorbing material of the invention has a hollow cross section, mainly comprises a fibrous structure and can be manufactured by press quenching just after extrusion followed by aging. In the press quenching, press quenching under air-cooling advantageous in view of the dimensional accuracy or the cost can be adopted. Further, the shock absorbing material of the invention has excellent cracking resistance to a compressive load in the lateral direction as well as in the axial direction. The shock absorbing material of the invention is suitable as side members or bumper stays in the frame structures of automobiles.Type: ApplicationFiled: July 9, 2002Publication date: January 9, 2003Applicant: KABUSHI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)Inventors: Hitoshi Kawai, Shinji Yoshihara, Masakazu Hirano
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Patent number: 6485583Abstract: A dispersion strengthened mechanically alloyed aluminium based alloy is provided which is prepared by mechanical alloying and is characterized by improved isotropic strength, fracture toughness and corrosion resistance. The alloy system contains by weight 1.2 to 1.6% lithium, 4.0 to 6.0% magnesium, 0.15 to 0.7% carbon, up to 1% oxygen and up to 2.0% in total of one or more grain controlling elements to provide microstructural optimization and control, the balance aluminium save for incidental impurities.Type: GrantFiled: February 13, 2001Date of Patent: November 26, 2002Assignee: Qinetiq LimitedInventors: Wendy J Vine, Andrew D Tarrant
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Patent number: 6454883Abstract: A one-piece steering wheel skeleton is produced by die casting an aluminum alloy of the Al—Mg—Mn type. Such a steering wheel skeleton has a high strength in combination with a high ductility. An object is to further increase the ductility of such a steering wheel skeleton, so that severe deformation of the steering wheel skeleton without breakage of the steering wheel spokes occurs under the influence of a very high acting force. To achieve this, the steering wheel skeleton undergoes a heat treatment in age hardening at elevated temperatures and then is cooled in stationary air. A steering wheel skeleton heat treated in this way can endure at least 30% greater deformation without breakage of the spokes in comparison with an untreated workpiece.Type: GrantFiled: December 9, 1999Date of Patent: September 24, 2002Assignee: DaimlerChrysler AGInventor: Franz Rückert
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Patent number: 6447982Abstract: A litho strip for use as an offset printing plate is described which has a composition of 0.05-0.25% Si, 0.30-0.40% Fe, 0.10-0.30% Mg, max. 0.05% Mn, and max. 0.04% Cu. The strip is produced from a continuous cast ingot of the above composition which is hot rolled to a thickness of up to 2-7 mm. The residual resistance ratio of the hot rolled strip is RR=10-20. The cold rolling is carried out with or without intermediate annealing, wherein the degree of rolling reduction after intermediate annealing is >60%. The further processing up to the EC roughening takes place with the microstructure adjusted in the rolling process at <100° C. The litho strip is characterized by a high thermal stability, a good roughening behavior in the EC processes, and a high reverse bending fatigue strength perpendicular to the rolling direction.Type: GrantFiled: June 30, 2000Date of Patent: September 10, 2002Assignee: VAW Aluminium AGInventors: Wolfgang von Asten, Bernhard Kernig, Barbara Grzemba
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Patent number: 6444059Abstract: Rolled or extruded products for welded constructions are made of an aluminum-magnesium-manganese type aluminum alloy, consisting essentially of, by weight: 3.0<Mg<5.0 0.5<Mn<1.0 Fe<0.25 Si<0.25 Zn<0.40 Cr<0.25 Cu<0.20 Ti<0.20 Zr<0.20 The product has a volumetric fraction of Mn containing dispersoids grater than 1.2%.Type: GrantFiled: July 25, 1997Date of Patent: September 3, 2002Assignee: Pechiney RhenaluInventors: Guy-Michel Raynaud, Jean-Luc Hoffmann, Laurent Cottignies, Georges Pillet
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Patent number: 6440583Abstract: Disclosed is an Al alloy for a welded construction having excellent welding characteristics, which Al alloy comprises 1.5 to 5 wt % of Si (hereinafter, wt % is referred to as %), 0.2 to 1.5% of Mg, 0.2 to 1.5% of Zn, 0.2 to 2% of Cu, 0.1 to 1.5% of Fe, and at least one member selected from the group consisting of 0.01 to 1.0% of Mn, 0.01 to 0.2% of Cr, 0.01 to 0.2% of Ti, 0.01 to 0.2% of Zr, and 0.01 to 0.2% of V, with the balance being Al and inevitable impurities. Also disclosed is a welded joint having this Al alloy base metal welded with an Al—Mg- or Al—Si-series filler metal.Type: GrantFiled: October 26, 2000Date of Patent: August 27, 2002Assignees: The Furukawa Electric Co., Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Seizo Ueno, Yoichiro Bekki, Noboru Hayashi
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Publication number: 20020088509Abstract: A recrystallization-hardenable aluminum cast alloy includes in addition to aluminum the following elements as functional elements: (1) 5 to 10 weight % silicon, (2) 0.2 to 0.35 weight % magnesium, (3) 0.3 to 3 weight % nickel and/or 0.6 to 3 weight % cobalt, and impurities due to manufacturing.Type: ApplicationFiled: December 17, 2001Publication date: July 11, 2002Inventors: Andreas Barth, Mohamed Douaoui
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Patent number: 6402860Abstract: The invention offers an aluminum alloy that not only has high hardness accompanied by balanced ductility but also has high toughness and superior processability. The invention also offers a method for manufacturing an aluminum-alloy member that not only has high hardness accompanied by balanced ductility but also has high toughness and superior processability. The aluminum alloy comprises (1) not less than 0.1 wt. % and not more than 8 wt. % Constituent A comprising one or more kinds of elements selected from the group consisting of titanium, vanadium, hafnium, and zirconium, (2) not less than 0.1 wt. % and not more than 20 wt. % Constituent B comprising one or more kinds of elements selected from the group consisting of lanthanum, cerium, praseodymium, neodymium, mischmetal, calcium, strontium, and barium, and (3) not less than 0.1 wt. % and not more than 20 wt. % Constituent C comprising one or more kinds of elements selected from the group consisting of magnesium and lithium.Type: GrantFiled: October 28, 1999Date of Patent: June 11, 2002Assignee: Sumitomo Electric Industries, Ltd.Inventors: Manabu Hashikura, Hisao Hattori, Toshihiko Kaji, Yoshinobu Takeda
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Patent number: 6383314Abstract: Aluminum sheets and methods for manufacturing aluminum sheets are provided. The present invention involves control of processing conditions in order to achieve a fine grain size (i.e. ASTM rating of 8.5 or greater) in the material prior to a final cold working operation. Also included within the scope of the present invention are products having a fine grain size which have strength levels above what can be obtained in 5××× alloys.Type: GrantFiled: June 14, 2000Date of Patent: May 7, 2002Assignee: Pechiney Rolled Products LLCInventors: Brady Dunbar, Kenneth Paul Smith
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Publication number: 20020048714Abstract: A support for a lithographic printing plate with no damage in appearance such as unevenness in the form of streaks and with excellent pit homogeneity. A support for a lithographic printing plate obtained by subjecting a surface of an aluminum alloy plate to a surface treatment including alkali etching and an electrochemical graining treatment, wherein the aluminum alloy plate shows dispersion of 50% or lower for each element, the dispersion being defined by an specific equation with regard to contents of Fe, Si, Mn, Mg and Sn in a surface layer portion thereof which is from the surface to a depth of 1 &mgr;m.Type: ApplicationFiled: September 6, 2001Publication date: April 25, 2002Inventors: Hirokazu Sawada, Atsuo Nishino, Akio Uesugi
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Publication number: 20020046786Abstract: A can end is manufactured by forming an end shell comprising a radially outer seaming flange, a chuck wall adjacent the seaming flange, a center panel, and an axially downward countersink joining the center panel to the chuck wall below the level of the seaming flange. The end shell is converted to an easy-open can end by forming a score on a portion of the center panel, raising a rivet on the center pane, and forming a tab and attaching the tab to the rivet. The end is subsequently formed by moving the center panel and the seaming flange one with respect to the other to raise the center panel above the level of the seaming flange.Type: ApplicationFiled: May 22, 2001Publication date: April 25, 2002Inventors: David Andrew Roberts, Andrew Osborne Blow, John Alfred Perigo
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Patent number: 6375767Abstract: A population of extrusion billets has a specification such that every billet is of an alloy of composition (in wt. %) : Fe<0.35; Si 0.20-0.6; Mn<0.10; Mg 0.25-0.9; Cu<0.015; Ti<0.10; Cr<0.10; Zn<0.03; balance Al of commercial purity. After ageing to T5 or T6 temper, extruded sections can be etched and anodized to give extruded matte anodized sections having improved properties.Type: GrantFiled: September 4, 1998Date of Patent: April 23, 2002Assignee: Alcan International LimitedInventors: Nicholas Charles Parson, Barry Roy Ellard, Graeme John Marshall
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Publication number: 20020043312Abstract: An aluminum sheet material for automobiles is herein disclosed, having an aluminum alloy composition: (i) comprising 3.5 to 5 wt % of Si, 0.3 to 1.5 wt % of Mg, 0.4 to 1.5 wt % of Zn, 0.4 to 1.5 wt % of Cu, 0.4 to 1.5 wt % of Fe, and 0.6 to 1 wt % of Mn, and one or more members selected from the group of 0.01 to 0.2 wt % of Cr, 0.01 to 0.2 wt % of Ti, 0.01 to 0.2 wt % of Zr, and 0.01 to 0.2 wt % of V, with the balance of aluminum and unavoidable impurities, or (ii) comprising between more than 2.6 wt % and 5 wt % of Si, 0.2 to 1.0 wt % of Mg, 0.2 to 1.5 wt % of Zn, 0.2 to 1.5 wt % of Cu, 0.2 to 1.5 wt % of Fe, and between 0.05 and less than 0.6 wt % of Mn, and one or more members selected from the group of 0.01 to 0.2 wt % of Cr, 0.01 to 0.2 wt % of Ti, 0.01 to 0.2 wt % of Zr, and 0.01 to 0.2 wt % of V, with the balance of aluminum and unavoidable impurities.Type: ApplicationFiled: October 17, 2001Publication date: April 18, 2002Applicant: THE FURUKAWA ELECTRIC CO., LTD.Inventors: Kazuhisa Kashiwazaki, Yoichiro Bekki, Noboru Hayashi
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Patent number: 6364970Abstract: The diecasting alloy based on aluminium-silicon contains 9.5 to 11.5 w. % silicon 0.1 to 0.5 w. % magnesium 0.5 to 0.8 w. % manganese max 0.15 w. % iron max 0.03 w. % copper max 0.10 w. % zinc max 0.15 w. % titanium with the remainder aluminium and for permanent refinement 30 to 300 ppm strontium.Type: GrantFiled: November 21, 1994Date of Patent: April 2, 2002Assignee: Aluminium Rheinfelden GmbHInventors: Ulrich Hielscher, Horst Sternau, Hubert Koch
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Publication number: 20020012606Abstract: The invention offers an aluminum alloy that not only has high hardness accompanied by balanced ductility but also has high toughness and superior processability. The invention also offers a method for manufacturing an aluminum-alloy member that not only has high hardness accompanied by balanced ductility but also has high toughness and superior processability. The aluminum alloy comprises (1) not less than 0.1 wt. % and not more than 8 wt. % Constituent A comprising one or more kinds of elements selected from the group consisting of titanium, vanadium, hafnium, and zirconium, (2) not less than 0.1 wt. % and not more than 20 wt. % Constituent B comprising one or more kinds of elements selected from the group consisting of lanthanum, cerium, praseodymium, neodymium, mischmetal, calcium, strontium, and barium, and (3) not less than 0.1 wt. % and not more than 20 wt. % Constituent C comprising one or more kinds of elements selected from the group consisting of magnesium and lithium.Type: ApplicationFiled: October 28, 1999Publication date: January 31, 2002Inventors: MANABU HASHIKURA, HISAO HATTORI, TOSHIHIKO KAJI, YOSHINOBU TAKEDA
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Patent number: 6342113Abstract: A high strength Al—Mg alloy in plate or extrusion form having significantly improved strength in both soft and work-hardened tempers as compared with AA5083 is provided. The materials have ductility, pitting, stress and exfoliation corrosion resistances equivalent to those of the AA5083. The materials have improved long term stress and exfoliation corrosion resistances at temperatures above 80° C. The composition is 5-6% Mg, >0.6-1.2% Mn, 0.4-1.5% Zn, 0.05-0.25% Zr, up to 0.3% Cr, up to 0.2% Ti, up to 0.5% each Fe and Si, up to 0.4% each Cu and Ag, remainder Al and inevitable impurities. Manufacture of plate of this alloy is by homogenizing an ingot, hot rolling the ingot into plate in the range 400-530° C., cold rolling the plate with or without inter-annealing, final and optionally inter-annealing of the cold rolled material at temperatures in the range 200-550° C.Type: GrantFiled: February 20, 2001Date of Patent: January 29, 2002Assignee: Corus Aluminium Walzprodukte GmbHInventors: Alfred Johann Peter Haszler, Desikan Sampath
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Patent number: 6342112Abstract: An Al—Mg based alloy sheet product in which the crystallographic texture exhibits a ratio of the volume fraction of grains in the S orientation {123}<634> to the volume fraction of grains in the CUBE orientation {100}<001> (S/Cube) being 1 or more, and is comprised of grains with a volume fraction of about 10% or less in the GOSS orientation {110}<001>, wherein the grain size is in a range of about 20 to 100 &mgr;m demonstrates good formability.Type: GrantFiled: July 19, 2000Date of Patent: January 29, 2002Assignees: Alcoa Inc., Kobe Steel Ltd.Inventors: Frederic Barlat, John C. Brem, Shigeo Hattori, Yasuhiro Havashida, Daniel J. Lege, Kwansoo Chung, Yasushi Maeda, Kuniaki Matsui, Shawn J. Murtha, Masahiro Yanagawa, Narikazu Hashimoto
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Publication number: 20020007881Abstract: An aluminum-based, corrosion resistant, alloy comprising: 0.06-0.35% by weight of iron, 0.05-0.15% by weight of silicon, 0.01-1.0% by weight of manganese, 0.02-0.60% by weight of magnesium, 0.05-0.Type: ApplicationFiled: April 13, 1999Publication date: January 24, 2002Inventors: OLE DAALAND, LARS AURAN, TROND FURU
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Patent number: 6337147Abstract: Improved shape and strength of the weld in a welded structure are obtained by use of a weldable aluminum product comprising a structural component which is a sheet, a plate or an extruded body and is made of an aluminum alloy containing not more than 1.5 wt % Zn. This component has, adhered on at least one side, a cladding layer made of an AA7xxx-series alloy having a corrosion potential lower than that of the alloy of the structural component. The alloy of the structural component is preferably an AA5xxx-series alloy containing Mg in the range 2 to 6 wt %.Type: GrantFiled: March 17, 2000Date of Patent: January 8, 2002Assignee: Corus Aluminium Walzprodukte GmbHInventors: Alfred Johann Peter Haszler, Klaus Alfons Mechsner
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Patent number: 6334916Abstract: The present invention provides an Al—Mg—Si based alloy sheet whose press-formability (particularly, deep-drawing formability, stretch-formability and bendability) is made higher than conventional Al—Mg—Si based alloy sheets of JIS 6000 series. For texture of the Al—Mg—Si based alloy sheet, orientation density of at least Cube orientation is controlled in accordance with a sort of press forming, so that press-formability improved to match with the press forming is provided. For example, to improve deep-drawing formability of an Al—Mg—Si based alloy sheet, the ratio of orientation density of Goss orientation to the orientation density of the Cube orientation (Goss/Cube) is set to 0.3 or less, and a grain size is set to 80 &mgr;m or less.Type: GrantFiled: May 10, 2000Date of Patent: January 1, 2002Assignee: Kobe Steel Ltd.Inventors: Katsushi Matsumoto, Yasuaki Sugizaki, Masahiro Yanagawa, Yuichi Seki
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Patent number: 6334911Abstract: An aluminum alloy having a composition represented by the general formula: AlbalCuaMb or AlbalCuaMbTMc wherein M represents one or two elements selected between Mn and Cr; TM represents at least one element selected from the group consisting of Ti, Zr, V, Fe, Co, and Ni; and a, b and c each represent an atomic percentage of 0<a≦3, 2<b ≦5, and 0<c≦2, containing quasi-crystals in the structure thereof, and having an elongation of at least 10% at room temperature and a Young's modulus of at least 85 GPa. The aluminum alloy exhibits excellent mechanical properties such as high-temperature strength, ductility, impact strength and tensile strength and is provided as a rapidly-solidified material, a heat-treated material obtained by heat-treating the rapidly-solidified material, or a consolidated and compacted material obtained by consolidating and compacting the rapidly-solidified material.Type: GrantFiled: February 19, 1998Date of Patent: January 1, 2002Assignee: YKK CorporationInventors: Kazuhiko Kita, Koji Saito, Koju Tachi, Teruaki Onogi, Kenji Higashi
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Publication number: 20010050118Abstract: The invention relates to rolled or extruded products for welded constructions made of AlMgMn type aluminium alloy.Type: ApplicationFiled: July 25, 1997Publication date: December 13, 2001Inventors: GUY-MICHEL RAYNAUD, JEAN-LUC HOFFMANN, LAURENT COTTIGNIES, GEORGES PILLET
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Publication number: 20010047838Abstract: The invention includes a method of forming an aluminum-comprising physical vapor deposition target. An aluminum-comprising mass is deformed by equal channel angular extrusion. The mass is at least 99.99% aluminum and further comprises less than or equal to about 1,000 ppm of one or more dopant materials comprising elements selected from the group consisting of Ac, Ag, As, B, Ba, Be, Bi, C, Ca, Cd, Ce, Co, Cr, Cu, Dy, Er, Eu, Fe, Ga, Gd, Ge, Hf, Ho, In, Ir, La, Lu, Mg, Mn, Mo, N, Nb, Nd, Ni, O, Os, P, Pb, Pd, Pm, Po, Pr, Pt, Pu, Ra, Rf, Rh, Ru, S, Sb, Sc, Se, Si, Sm, Sn, Sr, Ta, Tb, Te, Ti, Tl, Tm, V, W, Y, Yb, Zn and Zr. After the aluminum-comprising mass is deformed, the mass is shaped into at least a portion of a sputtering target.Type: ApplicationFiled: February 13, 2001Publication date: December 6, 2001Inventors: Vladimir M. Segal, Jianxing Li, Frank Alford, Stephane Ferrasse
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Publication number: 20010037844Abstract: An aluminum alloy energy-absorbing member, which satisfies the conditions of &agr;≧24 and (&agr;×&sgr;)≧6000, wherein &agr; (%) is the rupture elongation at a gauge distance of 5 mm, and &sgr; (MPa) is a 0.2% proof stress value, in the extruding direction of an aluminum alloy extruded material. This is an aluminum alloy energy-absorbing member that is lightweight, high in energy absorption, adequate in required mechanical strength, and preferable as an impact-absorbing member for an automobile, and the like.Type: ApplicationFiled: January 24, 2001Publication date: November 8, 2001Inventors: Yoichiro Bekki, Seizo Ueno
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Patent number: 6309481Abstract: An aluminium casting alloy contains: 2.0 to 3.5 w. % magnesium 0.15 to 0.35 w. % silicon 0.20 to 1.2 w. % manganese max. 0.40 w. % iron max. 0.10 w. % copper max. 0.05 w. % chromium max. 0.10 w. % zinc max. 0.003 w. % beryllium max. 0.20 w. % titanium max. 0.60 w. % cobalt max. 0.80 w. % cerium and aluminium as the remainder with further impurities individually max. 0.02 w. %, total max. 0.2 w. %. The aluminium alloy is particularly suitable for diecasting, thixocasting and thixoforging. A particular application is diecasting for components with high requirements for mechanical properties, as these are present even in the cast state and thus no further heat treatment is required.Type: GrantFiled: September 30, 1998Date of Patent: October 30, 2001Assignee: Aluminium Rheinfelden, GmbHInventors: Hubert Koch, Horst Schramm
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Patent number: 6302973Abstract: Aluminium-magnesium-zinc-silicon alloy, preferably in the form of a plate or a sheet or an extrusion, having the following composition in weight percent: Mg 0.5-1.5; Zn 0.1-3.8; Si 0.05-1.5; Mn 0.2-0.8; Zr 0.05-0.25; Cr 0.3 max.; Cu<0.3; Fe 0.5 max.; Ag 0.4 max.; Ti 0.2 max.; balance Al and inevitable impurities.Type: GrantFiled: January 22, 2000Date of Patent: October 16, 2001Assignees: Corus Aluminium Walzprodukte GmbH, Corus Aluminium Profiltechnik GmbHInventors: Alfred Johann Peter Haszler, Desikan Sampath
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Patent number: 6299706Abstract: A high-strength aluminum alloy having good porthole extrudability is provided. It has a Vickers hardness Hv of not less than 40 as measured in a homogenized state created by heat treatment before extrusion and a Vickers hardness Hv of not less than 20 imparted by plastic working after the heat treatment.Type: GrantFiled: November 24, 1997Date of Patent: October 9, 2001Assignees: Toyota Jidosha Kabushiki Kaisha, Nippon Light Metal, Co., Ltd.Inventors: Yoshiharu Miyake, Yoshihisa Serizawa, Yukio Okochi, Tetsuya Suganuma, Hajime Kamio, Takayuki Tsuchida, Hiroshi Nagashima
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Publication number: 20010025675Abstract: A high strength Al-Mg alloy in plate or extrusion form having significantly improved strength in both soft and work-hardened tempers as compared with AA5083 is provided. The materials have ductility, pitting, stress and exfoliation corrosion resistances equivalent to those of the AA5083. The materials have improved long term stress and exfoliation corrosion resistances at temperatures above 80° C. The composition is 5-6% Mg, >0.6-1.2% Mn, 0.4-1.5% Zn, 0.05-0.25% Zr, up to 0.3% Cr, up to 0.2% Ti, up to 0.5% each Fe and Si, up to 0.4% each Cu and Ag, remainder Al and inevitable impurities. Manufacture of plate of this alloy is by homogenizing an ingot, hot rolling the ingot into plate in the range 400-530° C., cold rolling the plate with or without inter-annealing, final and optionally inter-annealing of the cold rolled material at temperatures in the range 200-550° C.Type: ApplicationFiled: February 20, 2001Publication date: October 4, 2001Inventors: Alfred Johann Peter Haszler, Desikan Sampath
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Publication number: 20010024734Abstract: An aluminum extruded door beam includes an outer flange, an inner flange, and at least one web for connecting the outer flange and the inner flange. The outer corners at the extended ends of the outer flange have a radius R of 2.5 mm or less. The outward corners at the connections between the web and the inner flange and between the web and the outer flange have a radius R of 2 mm to 4 mm. The radius of the outward corners at the connections between the web and the inner flange and between the web and the outer flange is 1.5 to 2 times the width of the web. The length of the extended ends of the outer flange is 1 to 2 times the radius R of the outward corner at the connections between the web and the outer and inner flanges. The aluminum alloy extruded door beam material contains 0.8 to 1.5% by weight (hereinafter the same) of Mg and 4 to 7% of Zn, and the recrystallization surface layer has a thickness of 50 &mgr;m or less.Type: ApplicationFiled: December 26, 2000Publication date: September 27, 2001Applicant: KABUSHIKI KAISHA KOBE SEIKO SHOInventors: Hiroyuki Yamashita, Masakazu Hirano
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Publication number: 20010018940Abstract: An AlMgSi-alloy suitable for manufacturing components having a high ductility, characterized in that the alloy comprising, in wt. %: 1 Mg 0.3 to 1.0 Si 0.3 to 1.2 Fe max. 0.35 Mn >0.15 to 0.4 V 0.05 to 0.20 Cu max. 0.3 Cr max. 0.2 Zn max. 0.2 Ti max. 0.Type: ApplicationFiled: April 6, 2001Publication date: September 6, 2001Inventors: Gerhard Borst, Josef Morianz
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Publication number: 20010016175Abstract: An aluminum casting alloy contains 1 0.5 to 2.0 w. % magnesium max. 0.15 w. % silicon 0.5 to 2.0 w. % manganese max. 0.7 w. % iron max. 0.1 w. % copper max. 0.1 w. % zinc max. 0.2 w. % titanium 0.1 to 0.6 w. % cobalt max. 0.8 w. % cerium 0.05 to 0.5 w. % zirconium max. 1.1 w. % chromium max. 1.1 w. % nickel 0.005 to 0.15 w. % vanadium max. 0.5 w.Type: ApplicationFiled: January 18, 2001Publication date: August 23, 2001Inventors: Hubert Koch, Horst Schramm, Peter Krug
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Patent number: 6277217Abstract: An aluminum alloy comprises magnesium in a range of 3.0% by weight≦Mg≦5.5% by weight, manganese in a range of 1.5% by weight≦Mn≦2.0% by weight, nickel in a range of 0.5% by weight≦Ni≦0.9% by weight, and the balance of aluminum including inevitable impurities. Particularly, the Ni content is set in the above range in order to achieve an increase in toughness of a die-cast product. Thus, it is possible to suppress the amount of an intermetallic compound AlMnNi produced and to finely divide the intermetallic compound AlMnNi.Type: GrantFiled: April 13, 1999Date of Patent: August 21, 2001Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Sadafumi Yoshino, Seiichi Koike, Eitarou Koya, Masahiko Nakagawa
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Patent number: 6267829Abstract: The present invention is a method for producing an iron-containing hypoeutectic alloy free from primary platelet-shaped beta-phase of the Al5FeSi in the solidified structure by the steps (a) providing an iron-containing aluminum alloy having a composition within the following limits, in weight percent, 6-10% Si, 0.05-1.0% Mn, 0.4-2% Fe, at least one of 1) 0.01-0.8% Ti and/or Zr 2) 0.005-0.5% Sr and/or Na and/or Ba, 0-6.0% Cu, 0-2.0% Cr, 0-2.0% Mg, 0-6.0% Zn, 0-0.Type: GrantFiled: August 27, 1998Date of Patent: July 31, 2001Assignee: Opticast ABInventors: Lennart Bäckerud, Lars Arnberg, Guocai Chai
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Publication number: 20010008155Abstract: The newly proposed cast aluminum alloy product has the composition consisting of 6.5-8.0% Si, 0.25-0.45% Mg, 0.08-0.40% Fe, 0.001-0.01% Ca, P less than 0.001%, 0.02-0.1% Ti, 0.001-0.01% B, optionally one or two of 0.05-0.3% Cr and 0.05-0.2% Mn, and the balance being Al except inevitable impurities. It has the metallurgical structure that an &agr;-Al phase in a surface layer is of average grain size different by 50 &mgr;m or less from an &agr;-Al phase in an inner part, and that a maximum size of eutectic Si particles is 400 &mgr;m or smaller. It is manufactured by injecting a molten aluminum alloy into metal dies at an injection speed of 0.05-0.25 m/second, and then cooling the injected alloy at a cooling speed of 20° C./or higher in a temperature range between liquidus and solidus curves in a state charged with a pressure of 30 MPa or higher. Since the cast product is good of ductility, it is used as a member for coupling another member therewith by calking or the like.Type: ApplicationFiled: January 10, 2001Publication date: July 19, 2001Applicant: NIPPON LIGHT METAL CO., LTDInventors: Akio Hashimoto, Takaaki Ikari, Hiromi Takagi, Sumi Yoshikawa
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Patent number: 6261391Abstract: The present invention disclosed is an aluminum alloy plate for super plastic molding capable of cold pre-molding before super plastic molding. The alloy plate comprises Mg at from 2.0 to 8.0% (weight %, the same shall apply hereinafter) Be at from 0.0001 to 0.01%, at least one of Mn at from 0.3 to 2.5%, Cr at from 0.1 to 0.5%, Zr at from 0.1 to 0.5% and V at from 0.1 to 0.5%. Additionally, the alloy plate may comprise an Fe amount and an Si amount each within a range of 0.0 to 0.2%; amounts of Na and Ca within ranges of 3 ppm or less and 5 ppm or less, respectively; while the remainder of the alloy plate consists of Al and inevitable impurities. The resulting alloy plate a crystalline structure is a non-recrystallized crystal structure; the 90° critical bending radius is 7.5 times the plate thickness or less; and the yield strength ratio before and after the final annealing is 70% or more. The invention also discloses production methods for the alloy plate.Type: GrantFiled: March 10, 1995Date of Patent: July 17, 2001Assignees: Honda Giken Kogyo Kabushiki Kaisha, Sky Aluminum Co., Ltd.Inventors: Hideaki Ikeda, Masanori Kosugi, Shizuo Kimura, Mamoru Matsuo, Tsutomu Tagata, Nobuyuki Matsumoto
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Patent number: 6258463Abstract: The invention relates to a process for producing anodic coatings with superior corrosion resistance and other properties on aluminum and aluminum alloy surfaces by cryogenically treating the aluminum prior to anodizing. The invention also relates to the anodic coatings and to the anodically coated articles produced by the process. The anodized coating has a thickness of 0.001 to 0.5 mm and a time to penetration of at least 5 hours for aqueous solutions of HCl.Type: GrantFiled: March 2, 2000Date of Patent: July 10, 2001Assignee: Praxair S.T. Technology, Inc.Inventor: Michael Kevin Corridan
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Patent number: 6248453Abstract: A high strength dispersion strengthened aluminum alloy comprising an aluminum solid solution matrix strengthened by a dispersion of particles based on the compound Al3X, where Al3X has an L12 structure, is described. Various alloying elements are employed to modify the lattice parameter of the matrix and/or the particles so that the matrix and particles have similar lattice parameters. The alloy is produced by rapid solidification from the melt.Type: GrantFiled: December 22, 1999Date of Patent: June 19, 2001Assignee: United Technologies CorporationInventor: Thomas J. Watson
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Patent number: 6238495Abstract: A high strength Al—Mg alloy in plate or extrusion form having significantly improved strength in both soft and work-hardened tempers as compared with AA5083 is provided. The materials have ductility, pitting, stress and exfoliation corrosion resistances equivalent to those of the AA5083. The materials have improved long term stress and exfoliation corrosion resistances at temperatures above 80° C. The composition is 5-6% Mg, >0.6-1.2% Mn, 0.4-1.5% Zn, 0.05-0.25% Zr, up to 0.3% Cr, up to 0.2% Ti, up to 0.5% each Fe and Si, up to 0.4% each Cu and Ag, remainder Al and inevitable impurities. Manufacture of plate of this alloy is by homogenizing an ingot, hot rolling the ingot into plate in the range 400-530° C., cold rolling the plate with or without inter-annealing, final and optionally inter-annealing of the cold rolled material at temperatures in the range 200-550° C.Type: GrantFiled: February 24, 1999Date of Patent: May 29, 2001Assignee: Corus Aluminium Walzprodukte GmbHInventors: Alfred Johann Peter Haszler, Desikan Sampath
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Patent number: 6231809Abstract: An Al—Mg—Si type alloy sheet contains 0.2 to 1.5 wt % of Mg and 0.2 to 1.5 wt % of Si. The sheet has textures in which orientation distribution density of Goss orientation is 3 or lower, orientation distribution density of PP orientation is 3 or lower and orientation distribution density of Brass orientation is 3 or lower. The sheet may contain 0.01 to 1.5 wt % in total weight of one or more elements selected from the group consisting of Mn, Cr, Fe, Zr, V and Ti. The sheet may further contain 0.01 to 1.5 wt % in total weight of one or more elements selected from the group consisting of Cu, Ag, Zn and Sn. Thus, ridging marks is restrained in the aluminum alloy sheet.Type: GrantFiled: August 17, 1999Date of Patent: May 15, 2001Assignees: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.), Kobe Alcoa Transporation Products Ltd.Inventors: Katsushi Matsumoto, Masahiro Yanagawa, Yasuo Takaki
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Patent number: 6231995Abstract: An aluminum extruded door beam includes an outer flange, an inner flange, and at least one web for connecting the outer flange and the inner flange. The outer corners at the extended ends of the outer flange have a radius R of 2.5 mm or less. The outward corners at the connections between the web and the inner flange and between the web and the outer flange have a radius R of 2 mm to 4 mm. The radius of the outward corners at the connections between the web and the inner flange and between the web and the outer flange is 1.5 to 2 times the width of the web. The length of the extended ends of the outer flange is 1 to 2 times the radius R of the outward corner at the connections between the web and the outer and inner flanges. The aluminum alloy extruded door beam material contains 0.8 to 1.5% by weight (hereinafter the same) of Mg and 4 to 7% of Zn, and the recrystallization surface layer has a thickness of 50 &mgr;m or less.Type: GrantFiled: June 5, 1998Date of Patent: May 15, 2001Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Hiroyuki Yamashita, Masakazu Hirano
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Patent number: 6224987Abstract: A conductive substrate of an electrophotographic photoconductor has magnesium suicide precipitated therein as an impurity compound. The conductive substrate has an aluminum oxide film of minimum thickness deviation, and an aluminum base which exhibits a light scattering effect. An electrophotographic photoconductor using such a conductive substrate suppresses interference fringes caused by the interference action of a semiconductor laser light. Furthermore, irregular printing density and the formation of black spots is eliminated. A method for making such a conductive substrate includes annealing an aluminum base doped with silicon and magnesium to precipitate out Ms2Si, followed by anodizing a surface of the aluminum base to form an aluminum oxide film. A charge generation layer and a charge transport layer are formed on the aluminum oxide film to complete the electrophotographic photoconductor.Type: GrantFiled: June 9, 1999Date of Patent: May 1, 2001Assignee: Fuji Electric Co., Ltd.Inventor: Hidetaka Yahagi
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Patent number: 6221182Abstract: By careful control of composition and processing, Al—Mg based alloy sheets with preferred grain sizes and crystallographic textures that result in good press formability are disclosed. The Al—Mg alloy preferably contains 2-6 wt % Mg, and at least 0.03 wt % of at least one element selected from Fe, Mn, Cr, Zr, and Cu. The crystallographic texture is comprised of grains with a volume fraction in a range of about 30-50% in the CUBE orientation {100}<001>, and a volume fraction in a range of about 10 to 20% in the BRASS orientation {110}<112>, wherein the grain size is within a range of about 50 to 100 &mgr;m.Type: GrantFiled: July 19, 2000Date of Patent: April 24, 2001Assignees: Alcoa Inc., Kobe Steel Ltd.Inventors: Frederic Barlat, John C. Brem, Shigeo Hattori, Yasuhiro Hayashida, Daniel J. Lege, Yasushi Maeda, Kuniaki Matsui, Shawn J. Murtha, Masahiro Yanagawa, Kwansoo Chung, Narikazu Hashimoto